10000 mAh. Aluminum and black ABS plastic/PC trim housing with Silicone charging pad. UL 2056 Certified. Dual USB ports allow two devices to charge simultaneously. Micro USB Input: 5V/2A. Total USB Output: 5V/2.1A. Wireless Output: 5V/1A. Approx 5 to 6 hours recharge time. Connect a USB cable to the device port for optional wired charging. Charges through most protective cases. Not compatible with cases featuring magnetic components, metal or finger ring.